Relatively simple basis for identifying where and how to target change

Well-supported in the literature

Includes social norms, a construct not provided in other theories

Limitations:

TRA on its own, is not sufficient to predict behaviors in which volitional control is limited.

The role of past behavior.

According to the assumptions of the model, effects of external variables, such as past behavior, on intention and behavior should be mediated by the TRA / TPB constructs [1] However, a number of studies have shown that there is a residual effect of past behavior on the target behavior [2-4].

A meta-analysis of studies applying TRA / TPB to condom use found intention and perceived behavioral control to be more strongly associated with past behavior than with future behavior.